490,275 research outputs found
Minutes, Bucks Harbor Packing Company, 1882-1898
Record book for the Bucks Harbor Packing Company, a sardine Packing factory in Machiasport, Maine containing regular meeting minutes. Lists the original shareholders of the company within the initial agreement to incorporate. Includes discussion of stocks, election of company officers, construction of buildings, drawing of original company seal, and general business matters
Receipt from The Garlock Packing Co.
https://digitalcommons.salve.edu/goelet-new-york/1194/thumbnail.jp
On Packing Densities of Set Partitions
We study packing densities for set partitions, which is a generalization of
packing words. We use results from the literature about packing densities for
permutations and words to provide packing densities for set partitions. These
results give us most of the packing densities for partitions of the set
. In the final section we determine the packing density of the set
partition .Comment: 12 pages, to appear in the Permutation Patterns edition of the
Australasian Journal of Combinatoric
Force transmission in a packing of pentagonal particles
We perform a detailed analysis of the contact force network in a dense
confined packing of pentagonal particles simulated by means of the contact
dynamics method. The effect of particle shape is evidenced by comparing the
data from pentagon packing and from a packing with identical characteristics
except for the circular shape of the particles. A counterintuitive finding of
this work is that, under steady shearing, the pentagon packing develops a lower
structural anisotropy than the disk packing. We show that this weakness is
compensated by a higher force anisotropy, leading to enhanced shear strength of
the pentagon packing. We revisit "strong" and "weak" force networks in the
pentagon packing, but our simulation data provide also evidence for a large
class of "very weak" forces carried mainly by vertex-to-edge contacts. The
strong force chains are mostly composed of edge-to-edge contacts with a marked
zig-zag aspect and a decreasing exponential probability distribution as in a
disk packing
Particle-size distribution and packing fraction of geometric random packings
This paper addresses the geometric random packing and void fraction of polydisperse particles. It is demonstrated that the bimodal packing can be transformed into a continuous particle-size distribution of the power law type. It follows that a maximum packing fraction of particles is obtained when the exponent (distribution modulus) of the power law function is zero, which is to say, the cumulative finer fraction is a logarithmic function of the particle size. For maximum geometric packings composed of sieve fractions or of discretely sized particles, the distribution modulus is positive (typically 0<alpha<0.37). Furthermore, an original and exact expression is derived that predicts the packing fraction of the polydisperse power law packing, and which is governed by the distribution exponent, size width, mode of packing, and particle shape only. For a number of particle shapes and their packing modes (close, loose), these parameters are given. The analytical expression of the packing fraction is thoroughly compared with experiments reported in the literature, and good agreement is found
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